Beltfed G3 project

I have been looking at the hk21 kits for a while at ORF, it looks like a really good project with a max cool factor. Howeve the $5,000.00 price tag is a little rich for me.
the alternative is to go for one of the $1,900.00 belt feed parts kits and convert a G3 kit into a belt fed. While not as impressive as the hk21 I think it would be a fun build
and a great range toy. I just got a like new G3 kit from ORF and a JLD receiver is about $200.00 so for about $2,500.00 you got a killer belt gun.
Am I nuts or does it sound worth while?

I fired a hk21 and a hk51b. a 21 with a 8 1/2 " barrel. Both were fantastic to shoot. The 51 I could feel the heat from the muzzle blast. Real intense, fast shooters. Did not get the smile of my face for a week. You'll love it.

I have been looking to build one of these for quite a while but was broke when IO had the fmp parts sets for $1700, where did you find some at $1900 , would really like one if you could share.
I say go for it I have spent time behind a 21 semi, its no 42sa but still a cool gun

ORF has both kits, the basic belt feed conversion and 2 varieties of the hk 21, one has a ORF bbl shroud and is about $1k cheaper than the full hk parts set. It looks like a pretty simple build as it is mostly just welding.